#!/usr/bin/env mksh

set -e

# Parse the command line options.  Of course, powerpc has to be all
# different, and passes in a fifth argument, just because it is
# "special". We ignore the fifth argument, and do not flag is as an
# error, which it would be for any arch apart from powerpc
if [ $# -eq 3 ] || [ $# -eq 4 ] || [ $# -eq 5 ] ; then
  img="$2"
  map="$3"
  ver="$1"
  if [ $# -ge 4 ] && [ -n "$4" ] ; then
      dir="$4"
  else
      dir="/boot"
  fi
else
  echo "Usage: installkernel <version> <image> <System.map> <directory>"
  exit 1
fi

cp $img $dir/vmlinuz-$ver

# Create backups of older versions before installing
# updatever () {
#   if [ -f "$dir/$1-$ver" ] ; then
#     mv "$dir/$1-$ver" "$dir/$1-$ver.old"
#   fi

#   cat "$2" > "$dir/$1-$ver"

#   # This section is for backwards compatibility only
#   if test -f "$dir/$1" ; then
#     # The presence of "$dir/$1" is unusual in modern intallations, and
#     # the results are mostly unused.  So only recreate them if they
#     # already existed.
#     if test -L "$dir/$1" ; then
#         # If we were using links, continue to use links, updating if
#         # we need to.
#         if [ "$(readlink -f ${dir}/${1})" = "${dir}/${1}-${ver}" ]; then
#             # Yup, we need to change
#             ln -sf "$1-$ver.old" "$dir/$1.old"
#         else
#             mv "$dir/$1" "$dir/$1.old"
#         fi
#         ln -sf "$1-$ver" "$dir/$1"
#     else                        # No links
#         mv "$dir/$1" "$dir/$1.old"
#         cat "$2" > "$dir/$1"
#     fi
#   fi
# }

# if [ "$(basename $img)" = "vmlinux" ] ; then
#   img_dest=vmlinux
# else
#   img_dest=vmlinuz
# fi
# updatever $img_dest "$img"
# updatever System.map "$map"

# config=$(dirname "$map")
# config="${config}/.config"
# if [ -f "$config" ] ; then
#   updatever config "$config"
# fi

# If installing in the usual directory, run the same scripts that hook
# into kernel package installation.  Also make sure the PATH includes
# /usr/sbin and /sbin, just as dpkg would.
# if [ "$dir" = "/boot" ]; then
#   PATH="$PATH:/usr/sbin:/sbin" \
#     run-parts --verbose --exit-on-error --arg="$ver" --arg="$dir/$img_dest-$ver" \
#     /etc/kernel/postinst.d
# fi

exit 0

# vim: set ft=sh:
